We use GMC software with a Creo Rip to send jobs to the iGen but have color issues mostly with blues printing out purple. When we proof on a Xerox Phaser printer the color looks blue but when we print on the iGen it comes out purple. I was wondering how other users set up their color settings on the Creo to be able to print blue without affecting the halftones, which usually look good.

What Blue are you trying to print from GMC? Is it RBG, CMYK or a Named Spot color. Without knowing that, it is hard to tell how to adjust the settings on the Creo to print like the phaser.

My guess is it is an RGB Blue being sent, which would require you to turn on and match the RGB color profile and rendering intent in the color settings on the Creo to match the settings you use to print to the phaser.

If it is CMYK then source and simulation profiles will make a big difference.

If it is a spot named color, you can use the spot color editor to tweak the recipe to get the values you want.

Also, does GMC output files with embedded color profiles? What format out of GMC are you outputting?

For the blue color we're using cmyk. When we output files from GMC there is no color profile embedded. We usually have the Creo color set with the cmyk profile as Direct and the rendering intent set as Perceptual, this is when we get purple. We have better luck outputting blue, when we set up the cmyk profile as Swop Emulation with the rendering intent still set as Perceptual, but sometimes other colors and halftones seem dull looking. We know how to customize the spot colors and have made customize spot colors for corporate colors, but we're hoping that there is an overall setting that someone has had luck with.

Yeah, that's the rub... The direct path turns off CMYK processing, enabling the "full gamut" of the machine.

Since the machine's gamut has a very large "blue" color space (tends to purple for CMYK) then the phaser, the direct translation of that color lands in the purple part of the iGen3 gamut. Whereas the phaser is mapping that color to its CMYK profile color space.

One option would be to find a ICC / CSA profile that suits your CMYK emulation or create your own mapping the phaser gamut into the iGen3 and create a common color space for CMYK rendering.

Look at CGS Oris Color Tuner or GMG Software solutions for ways to make this much easier.

Thanks for your help.